Hong Kong–listed COSCO Shipping Development Co., Ltd. has confirmed the details of its interim dividend for the six months ended 30 June 2026 and provided revised information on withholding-tax arrangements.

Dividend Declaration • Amount: RMB 0.022 per share, equivalent to HKD 0.02542 per share, based on an exchange rate of RMB 1 = HKD 1.155655. • Dividend Type: Ordinary, semi-annual distribution for the financial year ending 31 December 2026. • Ex-dividend Date: 23 September 2026. • Record Date: 30 September 2026, with the Hong Kong share register closed from 25 to 30 September 2026. • Payment Date: 26 October 2026. • Share Registrar: Computershare Hong Kong Investor Services Limited, Hopewell Centre, Wanchai, Hong Kong.

Updated Withholding-Tax Framework The notice refines tax treatment for various shareholder categories: 1. Non-resident enterprise shareholders: 10 % corporate income tax withheld at source under PRC tax regulations effective since January 2008. 2. Mainland resident individual shareholders: 20 % individual income tax withheld by the company. 3. Mainland investors participating via Shanghai- or Shenzhen-Hong Kong Stock Connect: – Individual investors: 20 % tax withheld. – Mainland securities investment funds: 20 % tax withheld on behalf of the fund. 4. Non-resident individual shareholders: 20 % individual income tax withheld in line with the MOF and SAT notice effective 1 September 2026.

For mainland enterprise investors accessing H-shares through Stock Connect, no withholding applies; such investors must self-declare and settle the applicable income tax.

Purpose of Announcement The filing constitutes an update to the prior dividend notice, specifically amending information related to withholding-tax arrangements.

Board Composition As at 24 September 2026, the board comprises Executive Directors Zhang Mingwen (Chairman) and Wang Kunhui; Non-Executive Directors Ip Sing Chi, Zhang Xueyan and Zheng Xiaozhe; and Independent Non-Executive Directors Shao Ruiqing, Chan Kwok Leung and Wu Daqi.